Self-induced topological transitions and edge states supported by nonlinear staggered potentials

@article{Hadad2016SelfinducedTT,
  title={Self-induced topological transitions and edge states supported by nonlinear staggered potentials},
  author={Yakir Hadad and Alexander B. Khanikaev and Andrea Al{\'u}},
  journal={Physical Review B},
  year={2016},
  volume={93},
  pages={155112}
}
The canonical Su-Schrieffer-Heeger (SSH) array is one of the basic geometries that have spurred significant interest in topological band-gap modes. Here, we show that the judicious inclusion of third-order Kerr nonlinearities in SSH arrays opens rich physics in topological insulators, including the possibility of supporting self-induced topological transitions, as a function of the applied intensity. We highlight the emergence of a class of topological solutions in nonlinear SSH arrays… 

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